| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2021-47284: isdn: mISDN: netjet: Fix crash in nj_probe: |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| isdn: mISDN: netjet: Fix crash in nj_probe: |
| |
| 'nj_setup' in netjet.c might fail with -EIO and in this case |
| 'card->irq' is initialized and is bigger than zero. A subsequent call to |
| 'nj_release' will free the irq that has not been requested. |
| |
| Fix this bug by deleting the previous assignment to 'card->irq' and just |
| keep the assignment before 'request_irq'. |
| |
| The KASAN's log reveals it: |
| |
| [ 3.354615 ] WARNING: CPU: 0 PID: 1 at kernel/irq/manage.c:1826 |
| free_irq+0x100/0x480 |
| [ 3.355112 ] Modules linked in: |
| [ 3.355310 ] CPU: 0 PID: 1 Comm: swapper/0 Not tainted |
| 5.13.0-rc1-00144-g25a1298726e #13 |
| [ 3.355816 ] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS |
| rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 |
| [ 3.356552 ] RIP: 0010:free_irq+0x100/0x480 |
| [ 3.356820 ] Code: 6e 08 74 6f 4d 89 f4 e8 5e ac 09 00 4d 8b 74 24 18 |
| 4d 85 f6 75 e3 e8 4f ac 09 00 8b 75 c8 48 c7 c7 78 c1 2e 85 e8 e0 cf f5 |
| ff <0f> 0b 48 8b 75 c0 4c 89 ff e8 72 33 0b 03 48 8b 43 40 4c 8b a0 80 |
| [ 3.358012 ] RSP: 0000:ffffc90000017b48 EFLAGS: 00010082 |
| [ 3.358357 ] RAX: 0000000000000000 RBX: ffff888104dc8000 RCX: |
| 0000000000000000 |
| [ 3.358814 ] RDX: ffff8881003c8000 RSI: ffffffff8124a9e6 RDI: |
| 00000000ffffffff |
| [ 3.359272 ] RBP: ffffc90000017b88 R08: 0000000000000000 R09: |
| 0000000000000000 |
| [ 3.359732 ] R10: ffffc900000179f0 R11: 0000000000001d04 R12: |
| 0000000000000000 |
| [ 3.360195 ] R13: ffff888107dc6000 R14: ffff888107dc6928 R15: |
| ffff888104dc80a8 |
| [ 3.360652 ] FS: 0000000000000000(0000) GS:ffff88817bc00000(0000) |
| knlGS:0000000000000000 |
| [ 3.361170 ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| [ 3.361538 ] CR2: 0000000000000000 CR3: 000000000582e000 CR4: |
| 00000000000006f0 |
| [ 3.362003 ] DR0: 0000000000000000 DR1: 0000000000000000 DR2: |
| 0000000000000000 |
| [ 3.362175 ] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: |
| 0000000000000400 |
| [ 3.362175 ] Call Trace: |
| [ 3.362175 ] nj_release+0x51/0x1e0 |
| [ 3.362175 ] nj_probe+0x450/0x950 |
| [ 3.362175 ] ? pci_device_remove+0x110/0x110 |
| [ 3.362175 ] local_pci_probe+0x45/0xa0 |
| [ 3.362175 ] pci_device_probe+0x12b/0x1d0 |
| [ 3.362175 ] really_probe+0x2a9/0x610 |
| [ 3.362175 ] driver_probe_device+0x90/0x1d0 |
| [ 3.362175 ] ? mutex_lock_nested+0x1b/0x20 |
| [ 3.362175 ] device_driver_attach+0x68/0x70 |
| [ 3.362175 ] __driver_attach+0x124/0x1b0 |
| [ 3.362175 ] ? device_driver_attach+0x70/0x70 |
| [ 3.362175 ] bus_for_each_dev+0xbb/0x110 |
| [ 3.362175 ] ? rdinit_setup+0x45/0x45 |
| [ 3.362175 ] driver_attach+0x27/0x30 |
| [ 3.362175 ] bus_add_driver+0x1eb/0x2a0 |
| [ 3.362175 ] driver_register+0xa9/0x180 |
| [ 3.362175 ] __pci_register_driver+0x82/0x90 |
| [ 3.362175 ] ? w6692_init+0x38/0x38 |
| [ 3.362175 ] nj_init+0x36/0x38 |
| [ 3.362175 ] do_one_initcall+0x7f/0x3d0 |
| [ 3.362175 ] ? rdinit_setup+0x45/0x45 |
| [ 3.362175 ] ? rcu_read_lock_sched_held+0x4f/0x80 |
| [ 3.362175 ] kernel_init_freeable+0x2aa/0x301 |
| [ 3.362175 ] ? rest_init+0x2c0/0x2c0 |
| [ 3.362175 ] kernel_init+0x18/0x190 |
| [ 3.362175 ] ? rest_init+0x2c0/0x2c0 |
| [ 3.362175 ] ? rest_init+0x2c0/0x2c0 |
| [ 3.362175 ] ret_from_fork+0x1f/0x30 |
| [ 3.362175 ] Kernel panic - not syncing: panic_on_warn set ... |
| [ 3.362175 ] CPU: 0 PID: 1 Comm: swapper/0 Not tainted |
| 5.13.0-rc1-00144-g25a1298726e #13 |
| [ 3.362175 ] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS |
| rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 |
| [ 3.362175 ] Call Trace: |
| [ 3.362175 ] dump_stack+0xba/0xf5 |
| [ 3.362175 ] ? free_irq+0x100/0x480 |
| [ 3.362175 ] panic+0x15a/0x3f2 |
| [ 3.362175 ] ? __warn+0xf2/0x150 |
| [ 3.362175 ] ? free_irq+0x100/0x480 |
| [ 3.362175 ] __warn+0x108/0x150 |
| [ 3.362175 ] ? free_irq+0x100/0x480 |
| [ 3.362175 ] report_bug+0x119/0x1c0 |
| [ 3.362175 ] handle_bug+0x3b/0x80 |
| [ 3.362175 ] exc_invalid_op+0x18/0x70 |
| [ 3.362175 ] asm_exc_invalid_op+0x12/0x20 |
| [ 3.362175 ] RIP: 0010:free_irq+0x100/0x480 |
| [ 3.362175 ] Code: 6e 08 74 6f 4d 89 f4 e8 5e ac 09 00 4d 8b 74 24 18 |
| 4d 85 f6 75 e3 e8 4f ac 09 00 8b 75 c8 48 c7 c7 78 c1 2e 85 e8 e0 cf f5 |
| ff <0f> 0b 48 8b 75 c0 4c 89 ff e8 72 33 0b 03 48 8b 43 40 4c 8b a0 80 |
| [ 3.362175 ] RSP: 0000:ffffc90000017b48 EFLAGS: 00010082 |
| [ 3.362175 ] RAX: 0000000000000000 RBX: ffff888104dc8000 RCX: |
| 0000000000000000 |
| [ 3.362175 ] RDX: ffff8881003c8000 RSI: ffffffff8124a9e6 RDI: |
| 00000000ffffffff |
| [ 3.362175 ] RBP: ffffc90000017b88 R08: 0000000000000000 R09: |
| 0000000000000000 |
| [ 3.362175 ] R10: ffffc900000179f0 R11: 0000000000001d04 R12: |
| 0000000000000000 |
| [ 3.362175 ] R13: ffff888107dc6000 R14: ffff888107dc6928 R15: |
| ffff888104dc80a8 |
| [ 3.362175 ] ? vprintk+0x76/0x150 |
| [ 3.362175 ] ? free_irq+0x100/0x480 |
| [ 3.362175 ] nj_release+0x51/0x1e0 |
| [ 3.362175 ] nj_probe+0x450/0x950 |
| [ 3.362175 ] ? pci_device_remove+0x110/0x110 |
| [ 3.362175 ] local_pci_probe+0x45/0xa0 |
| [ 3.362175 ] pci_device_probe+0x12b/0x1d0 |
| [ 3.362175 ] really_probe+0x2a9/0x610 |
| [ 3.362175 ] driver_probe_device+0x90/0x1d0 |
| [ 3.362175 ] ? mutex_lock_nested+0x1b/0x20 |
| [ 3.362175 ] device_driver_attach+0x68/0x70 |
| [ 3.362175 ] __driver_attach+0x124/0x1b0 |
| [ 3.362175 ] ? device_driver_attach+0x70/0x70 |
| [ 3.362175 ] bus_for_each_dev+0xbb/0x110 |
| [ 3.362175 ] ? rdinit_setup+0x45/0x45 |
| [ 3.362175 ] driver_attach+0x27/0x30 |
| [ 3.362175 ] bus_add_driver+0x1eb/0x2a0 |
| [ 3.362175 ] driver_register+0xa9/0x180 |
| [ 3.362175 ] __pci_register_driver+0x82/0x90 |
| [ 3.362175 ] ? w6692_init+0x38/0x38 |
| [ 3.362175 ] nj_init+0x36/0x38 |
| [ 3.362175 ] do_one_initcall+0x7f/0x3d0 |
| [ 3.362175 ] ? rdinit_setup+0x45/0x45 |
| [ 3.362175 ] ? rcu_read_lock_sched_held+0x4f/0x80 |
| [ 3.362175 ] kernel_init_freeable+0x2aa/0x301 |
| [ 3.362175 ] ? rest_init+0x2c0/0x2c0 |
| [ 3.362175 ] kernel_init+0x18/0x190 |
| [ 3.362175 ] ? rest_init+0x2c0/0x2c0 |
| [ 3.362175 ] ? rest_init+0x2c0/0x2c0 |
| [ 3.362175 ] ret_from_fork+0x1f/0x30 |
| [ 3.362175 ] Dumping ftrace buffer: |
| [ 3.362175 ] (ftrace buffer empty) |
| [ 3.362175 ] Kernel Offset: disabled |
| [ 3.362175 ] Rebooting in 1 seconds.. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47284 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.4.273 with commit 958cb1078ca60d214826fd90a0961a447fade59a |
| Fixed in 4.9.273 with commit 4c1fcb6ec964b44edbf84235134582a5ffae1521 |
| Fixed in 4.14.237 with commit a0a37e4454ca1c0b424edc2c9c2487c2c46a1be6 |
| Fixed in 4.19.195 with commit bf78e25bd3f487208e042c67c8a31706c2dba265 |
| Fixed in 5.4.126 with commit 9d7d4649dc1c53acf76df260fd519db698ed20d7 |
| Fixed in 5.10.44 with commit 143fc7220961220eecc04669e5909af8847bf8c8 |
| Fixed in 5.12.11 with commit 6249193e03709ea625e10706ecaf17fea0427d3d |
| Fixed in 5.13 with commit 9f6f852550d0e1b7735651228116ae9d300f69b3 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2021-47284 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/isdn/hardware/mISDN/netjet.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/958cb1078ca60d214826fd90a0961a447fade59a |
| https://git.kernel.org/stable/c/4c1fcb6ec964b44edbf84235134582a5ffae1521 |
| https://git.kernel.org/stable/c/a0a37e4454ca1c0b424edc2c9c2487c2c46a1be6 |
| https://git.kernel.org/stable/c/bf78e25bd3f487208e042c67c8a31706c2dba265 |
| https://git.kernel.org/stable/c/9d7d4649dc1c53acf76df260fd519db698ed20d7 |
| https://git.kernel.org/stable/c/143fc7220961220eecc04669e5909af8847bf8c8 |
| https://git.kernel.org/stable/c/6249193e03709ea625e10706ecaf17fea0427d3d |
| https://git.kernel.org/stable/c/9f6f852550d0e1b7735651228116ae9d300f69b3 |
